University:
Boston University
Course:
ENG ME 302 | Engineering Mechanics II
Academic year:

2022
Views:

408

Pages:

12
Author:

Kasazami2c24

LOW TEMPERATURE WORKSHOP – HEAT PUMPS German R&D Perspectives on Heat Pumps Intro ◼ Climate action plan: 2050 Germany aims to be climate-neutral. ◼ Industry sector has to reduce emissions by 50 % until 2030. ◼ Nearly 70 % of energy used in the industry is provided by fuels. Intro ◼ Climate action plan: 2050 Germany aims to be climate-neutral. ◼ Industry sector has to reduce emissions by 50 % until 2030. ◼ Nearly 70 % of energy used in the industry is provided by fuels. substitution of fossil fuels and energy efficiency • hydrogen/ synthetic fuels • electricity • energy efficiency Intro ◼ Similiar goals on the european level Recent Situation ◼ 50 % of the energy demand in Europe is caused by Heating and Cooling. ◼ 27 % space heating ◼ 16 % process heating ◼ hot water (4%), space cooling (1%), process cooling (1%) Heat Pumps for the Building Sector Heat Pumps for the Building Sector Challenging approach needs ➢ closing the discussions around refrigerants. ➢ more industrialized production of heat pumps. Heat Pumps for the Building Sector – recent R&D at ISE LC150 - Low Charge Heat Pump Module using 150g of R-290 S teering Com m ittee, definition of requirem ents , receipt of res ults and acces s to IPs 1,2 Mio. € (approx. 1-4 % of total project volume, pro rata market share) LC150 PLATFORM DEVELOPMENT OF A CHARGE-REDUCED HEAT PUMP MODULE WITH PROPANE 4,8 Mio. € project budget, 2.5 y ears , 1.10.2020 – 31.03.2023 3,6 Mio. € (75 % funding rate) ◼ Component testing (heat exchangers, compressors, valves etc.) in single component tests and in broad cross evaluation ◼ Charge reduction and localization of refrigerant ◼ Operating strategies ◼ Standardization ◼ Network and platform for manufacturers Heat Pumps for Industrial Applications Heat Pumps for Industrial Applications Substitution of fossil fuels used for process heating by heat pumps needs ➢ approved and simple high temperature heat pumps/ refrigerants/ components ➢ shorter payback times Heat Pumps for Industrial Applications – recent R&D at ISE research network of “SubSie” projects ◼ Evaporation of water as refrigerant is limited to > 0°C due to risk of freezing ◼ Research network of 5 projects with 12 partners develops different concepts for thermally driven heat pumps / chillers: ◼ heat pumps: → utilization of ambient air as low T heat source ◼ chillers: → significant extension of the scope of application ◼ Focus on different evaporator concepts ◼ tolerate temperatures below 0°C (→ freezing / lower freezing point / …) ◼ supply sufficient evaporation power [2] grant no. 03EN2012A Summary – remarks on „How to get more heat pumps into the market?“ ◼ Lets work together; there is not much time! ◼ Keep it as efficient as needed and as reliable as possible! … real systems have to be reliable and should keep their efficiency in operation. Efficiency related control strategies and failure detection will help. ◼ Make it sustainable! … use natural refrigerants, no complex materials, easy maintainable.